from tkinter import *
root = Tk()
root.title('ИТ марафон')
root.geometry('500x500')
X = int(input())
Y = int(input())
N = int(input())
canvas = Canvas(bg='black', width=500, height=500)
canvas.pack(anchor=CENTER,expand=1)
coords = [0, 0, 10, 0, 10, 10, 20, 10, 20, 20, 10, 20, 10, 30, 0, 30]

if N == 0 and X>=0 and X<=500 and Y>=0 and Y<=500:
    pass
else:
    if N > 0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 30*N+Y<=500:
        pass
    else:
        if N < 0 and 20*N+X>=0 and 30*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:
            pass
        else:
            print('Размер фигуры превышает максимальный размер поля')
            exit()
canvas.create_polygon(coords[0] * N + X,coords[1] * N + Y,
 coords[2] * N + X, coords[3] * N + Y,
 coords[4] * N + X, coords[5] * N + Y,
 coords[6] * N + X, coords[7] * N + Y,
 coords[8] * N + X, coords[9] * N + Y,
 coords[10] * N + X, coords[11] * N + Y,
 coords[12] * N + X, coords[13] * N + Y,
 coords[14] * N + X, coords[15] * N + Y, fill='white')
root.mainloop()